I think this advice only applies to the end users of the JDK and libs, e.g. people who develop webapps. We maintain an OSS library and plan to support JDK 8 for

I think this advice only applies to the end users of the JDK and libs, e.g. people who develop webapps. We maintain an OSS library and plan to support JDK 8 for as long as possible (though some of our dependencies made a move to JDK 11 and most likely we'll have to follow suit). With this approach, our libraries can be used by developers under JVM 8, 11, or 17.